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Showing 145 results for permafrost thaw ...

Boreal shrub and tree expansion promotes soil warming
  • Type: Article

Read the abstract and get the link to an article published in Environmental Research Letters that connects vegetation shift to warming Arctic and Boreal soils under vegetation. Kropp, H., M. M. Loranty, S. M. Natali, A. L. Kholodov, A. V. Rocha, … J. A. O’Donnell … et al. 2020. Shallow soils are warmer under trees and tall shrubs across Arctic and Boreal ecosystems. Environmental Research Letters.

Increasing temperatures in Alaska national parks
  • Type: Article

Read the abstract and link to a paper that describes increasing temperatures and their effects on permafrost in northern parks: Swanson, D. K., P. J. Sousanes, and K. Hill. 2021. Increased mean annual temperatures in 2014-2019 indicate permafrost thaw in Alaskan national parks. Arctic, Antarctic, and Alpine Research 53(1): 1-19.

Pictured Rocks National Lakeshore

The Logger's Transport Wayside
  • Type: Place

Denali National Park & Preserve

Denali National Park and Preserve: Resisting Permafrost Thaw Impacts on the Denali Park Road
  • Type: Article

Denali National Park and Preserve faces an escalating challenge due to climate change: the historically slow but steadily accelerating collapse down a hillside of the Denali Park Road. This 92-mile scenic route is the only road across six million acres of Denali National Park and Preserve wilderness, and it is an important transportation route for park staff and visitors

Arctic Inventory & Monitoring Network

The role of old carbon in aquatic food webs
  • Type: Article

Read a summary and get the link to this article that looks at the use of old carbon in Arctic fish food webs and potential impacts of climate change: Stanek, A.E., Carey, M.P., O'Donnell, J.A., Laske, S.M., Xu, X., Dunton, K.H., von Biela, V.R. 2024. Arctic fishes reveal a gradient in radiocarbon content and use. Limnology and Oceanography Letters.

Repeat fires tip the scale on near-surface permafrost in Wrangell-St. Elias National Park and Preserve
  • Type: Article

In July 2024, fire ecologists re-visited a study area an in Wrangell-St. Elias National Park & Preserve that burned twice in rapid series. The 2009 Chakina Fire burned ~ 56,000 acres in the Chitina River Valley. A mere seven years later, a third of the Chakina fire area reburned in the 2016 Steamboat Fire.

Yellowstone National Park

Wolf Lake Trailhead
  • Type: Place

This trailhead in the middle of the park provides access to a series of trails:- Wolf Lake- Ice Lake Trail- Howard Eaton Trail: Cascade Lake-Norris CampgroundParking is on the south side of the road and the trailhead is on the north side. Use caution when crossing the road. Wolf Lake Trail This 2.4-mile (3.9-km) there-and-back trail travels through forests and swampy meadows on its way to meet up with the Howard Eaton Trail: Cascade Lake-Norris Campground. The highlight of th

Yellowstone National Park

Midway Geyser Basin Trailhead
  • Type: Place

Midway Geyser Basin is small but spectacular. Excelsior Geyser is a 200 x 300 foot crater that constantly discharges more than 4,000 gallons of water per minute into the Firehole River. Grand Prismatic Spring, Yellowstone's largest hot spring, is 200-330 feet in diameter and more than 121 feet deep. Hot SpringsHot springs are the most common hydrothermal features in Yellowstone. Their plumbing has no constrictions. Superheated water cools as it reaches the surface, sinks, and

Yellowstone National Park

Lost Lake Trailhead
  • Type: Place

This trailhead is located at the end of the Pretified Tree Parking Lot. It provides access to the following trail:- Lost Lake TrailParking is at premium at this location, though there also is a high turn-over rate in vehicles. Additional, or winter-time parking can be found in a large pulloff along the Grand Loop Road at the entrance to the parking area. Lost Lake Trail This moderate 2.8-mile (4.5-km) loop trail begins behind Roosevelt Lodge and traverses through forest to th

Blue Ridge Parkway

Asheville Watershed
  • Type: Place

Located between Milepost 355 and 370 along the Blue Ridge Parkway, the Asheville Watershed is where Asheville gets it water. It has the capacity to produce and deliver 43 million gallons of water to city residents per day. The North Fork Reservoir, one of two artificial lakes within the watershed, is visible from several overlooks along the Parkway.

The Great Coastal Gale of 2007
  • Type: Article

In early December 2007, a series of three Pacific storms struck coastal Oregon and Washington. Later named the “Great Coastal Gale of 2007,” these storms brought in heavy rains, severe temperature swings, and hurricane force winds exceeding 100 miles per hour to Lewis and Clark National Historical Park. Ten years later, the forest looks very different. How is the park using remote sensing technology to monitor landscape change?

Rock Creek Park

Picnic Grove 2
  • Type: Place

Picnic Grove 2 is split into north and south sections on opposite sides of the creek. Both sections have sidewalks or multi-use trails that provide safe access to Peirce Mill. Maximum capacity is limited to 25 people per section of the picnic area.

Bandelier National Monument

Intro Tsankawi Guided Hike Stop 0
  • Type: Place

Everglades National Park

Anhinga Trail
  • Type: Place

The famous Anhinga Trail is a self-guiding pavement and boardwalk trail winding through and over sawgrass marsh and freshwater slough. A paved path leads you along the water and to a looping boardwalk, providing views into the prairie and the clear waters of the slough. You may see alligators, fish, turtles, anhingas, and many other birds, especially during the winter, when the generally lower waters of the dry season concentrate aquatic wildlife in the slough. This is one th

Rock Creek Park

Sarah Rittenhouse Armillary Sphere
  • Type: Place

The memorial to Sarah Louise Rittenhouse (1845-1943) is an armillary sphere on a marble pedestal. She is considered the founder of Montrose Park in Georgetown and is given credit for saving the park area from a housing development planned in the early 1900's. This memorial was a gift from the Georgetown Garden Club and was dedicated in 1956.InscriptionsIn Tribute toSarah Louisa Rittenhouse1845-1942Through Her VisionAnd Perseverance ThisLand BecameMontrose ParkAn etching on th

Arches National Park

Delicate Arch Trail
  • Type: Place

This trail hikes up 538 feet (164 m) to the most famous arch in the park, crossing open slickrock with no shade. Pass historic Wolfe Ranch and a rock markings panel, then climb steadily; follow the rock cairns and signs. Just before you get to Delicate Arch, the trail traverses a narrow rock ledge for about 200 yards (183 m). Take at least 2 quarts (2 L) of water per person. Roundtrip distance: 3 miles (4.8 km) Time: 2-3 hours

New Research Shows Why Arctic Streams Are Turning Orange
  • Type: Article

In the pristine Brooks Range in Arctic Alaska, streams are turning bright orange and fish are disappearing, threatening the well-being of local communities. A recent scientific paper reveals why.

Trail Of Tears National Historic Trail

Mantle Rock
  • Type: Place

In this place, over 1,000 Cherokee from the Peter Hildebrand Detachment spent around two weeks waiting for the Ohio River to thaw and become passable.

Sequoia & Kings Canyon National Parks

Zumwalt Meadow
  • Type: Place

Zumwalt Meadow is one of the park's most iconic, scenic meadows. Explore the trail that begins near the Kings River, crosses a riparian corridor, and then climbs gently along a rocky hillside. As you hike through a talus slope, you will catch glimpses of the meadow below. Meadows often attract bears and other animals such as yellow-bellied marmots, deer, birds of prey, and snakes; watch for them all here.

Great Basin National Park

Park Prepares for 2015 Bat Surveys
  • Type: Article

White-nose syndrome (WNS) is a serious disease affecting North American bats. It is caused by the fungus Pseudogymnoascus destructans and has resulted in the death of millions of bats in the United States and Canada. Bats are crucial to ecosystem function and provide billions of dollars per year to agriculture in insect suppression services alone. Despite efforts to contain it, WNS continues to spread.